Friedrich Wilhelm Rembert Von Berg, count, a Russian general, born May 26, 1790. When a young man he published an account of his travels in southern Europe and Turkey, which led to his being sent by Capo d'Istria, minister of foreign affairs, to Naples in a diplomatic capacity, but for the purpose in reality of observing the carbonari, his accounts of whom attracted much attention. As colonel in the army he took part in expeditions against the Kirghizes (1822-'4), and also in one to the Aral sea (1825), which had important scientific results. In 1830 he married in Italy the countess Cicogna. He served for 12 years under Prince Paskevitch in Poland, and was employed upon diplomatic missions and in military topography. In 1843 he was appointed general of infantry and quartermaster general on the imperial staff, and transferred to St. Petersburg. , When Austria in 1849 requested the assistance of Russia against Hungary, Berg was sent as plenipotentiary to Vienna, and used all his influence with Prince Paskevitch to prevent a breach between him and Hayinau. On his return to St. Petersburg he engaged in topographical works of magnitude. Having been sent as governor to Finland, he was recalled in 1861 on account of his unpopularity.

He was next employed, in 1863-'4, in putting down the insurrection in Poland, at first as adviser of the grand duke Constantine, and afterward as commander-inchief and governor of that province, an office which he still holds (1873). He was created field marshal in 1867.